CN109215928A - A kind of superconducting magnet room temperature current feed attachment device - Google Patents
A kind of superconducting magnet room temperature current feed attachment device Download PDFInfo
- Publication number
- CN109215928A CN109215928A CN201811419194.3A CN201811419194A CN109215928A CN 109215928 A CN109215928 A CN 109215928A CN 201811419194 A CN201811419194 A CN 201811419194A CN 109215928 A CN109215928 A CN 109215928A
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- China
- Prior art keywords
- room temperature
- superconducting magnet
- current feed
- insulated electric
- conductor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000004020 conductor Substances 0.000 claims abstract description 69
- 239000004593 Epoxy Substances 0.000 claims description 21
- 239000010935 stainless steel Substances 0.000 claims description 14
- 229910001220 stainless steel Inorganic materials 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 10
- 229920000647 polyepoxide Polymers 0.000 claims description 9
- 125000003700 epoxy group Chemical group 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 230000005284 excitation Effects 0.000 abstract description 5
- 239000001307 helium Substances 0.000 abstract description 5
- 229910052734 helium Inorganic materials 0.000 abstract description 5
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 3
- 230000005347 demagnetization Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Abstract
The invention discloses a kind of superconducting magnet room temperature current feed attachment devices, comprising: vacuum plant, the vacuum plant top are equipped with through-hole；Insulated electric conductor component is set in the through-hole, including insulated electric conductor and with the insulating nut of its threaded engagement；Bellows component, the upper end are fixedly connected with the vacuum plant, and lower end is fixedly connected with insulated electric conductor and it can be driven to move up and down；Conductor assembly is set in the vacuum plant, including conductor and conductive support, is in contact when the insulated electric conductor moves down with the conductor.In superconducting magnet excitation and demagnetization, room temperature current feed may make to connect well with 50K high-temperature superconductive lead wire internal connection using above-mentioned apparatus；After excitation, the two is disconnected by tightening insulating nut, the conductive heat leakage of room temperature current feed when can reduce superconducting magnet steady-state operation.Above-mentioned whole process does not consume liquid helium, does not need the low temperature environment of 4.2K, easy to operate, low in cost.
Description
Technical field
It is connected and is filled with room temperature current feed the present invention relates to superconducting magnet technical field more particularly to a kind of superconducting magnet
It sets.
Background technique
Currently, helium gas cooling current feed technology is widely used in superconducting magnet field, to reach superconducting magnet excitation and move back
Safe current-carrying when magnetic.This technology must consume liquid helium, to generate cold helium, to cool down current feed.Meanwhile this technology is necessary
By the service tower of superconducting magnet, the current feed plug under 4.2K worst cold case is carried out, operation difficulty is larger.
Summary of the invention
It is easy to operate the object of the present invention is to provide a kind of superconducting magnet room temperature current feed attachment device, and use
Cost is relatively low.
To achieve the above object, the present invention provides a kind of superconducting magnet room temperature current feed attachment devices, comprising:
Vacuum plant, the vacuum plant top are equipped with through-hole；
Insulated electric conductor component is set in the through-hole, including insulated electric conductor and with the insulating nut of its threaded engagement；
Bellows component, the upper end are fixedly connected with the vacuum plant, and lower end is fixedly connected with insulated electric conductor and can
Drive it to move up and down；
Conductor assembly is set in the vacuum plant, including conductor and conductive support, and the insulated electric conductor is to moving down
It is in contact when dynamic with the conductor.
Preferably, the upper outer of the vacuum plant is provided with limited block, for preventing the insulating nut from working
It is subjected to displacement in the process.
Preferably, the conductive support is the fixed support component of epoxy, including two pendant epoxies support rods being fixedly connected
With bottom epoxy support plate, the conductor is set in the bottom epoxy support plate, the two pendant epoxies support rods and vacuum
The inside upper surface of device is fixedly connected.
Preferably, the conductor is copper pedestal.
Preferably, the bellows component upper end and the vacuum plant weld.
Preferably, the insulated electric conductor lower end outside is provided with stainless steel annular element, the stainless steel annular element with it is described
It welds the lower end of bellows component.
It preferably, is interference fit between the stainless steel annular element and the insulated electric conductor.
Preferably, the contact surface of the lower end of the insulated electric conductor and the copper pedestal is tapered surface.
Preferably, the vacuum plant is composed of flanged plate.
With in room temperature current feed attachment device, the upper end of the insulated electric conductor is located at superconducting magnet provided by the present invention
Under atmospheric condition, lower end is located in the vacuum plant；When notconnect state, the insulating nut is screwed, and the insulation is led
Body is with described free of conductors to disconnect；When being converted to connection status, the insulating nut is unscrewed, outside atmosphere passes through
Gap between the insulated electric conductor and the insulating nut enters in the bellows component, because ripple tube outer surface is located at very
Under dummy status, thus the draught head of its surfaces externally and internally causes bellows component to generate downward power, so that it generates elastic deformation
It extends downward, while driving the insulated electric conductor to move down until being in contact with the conductor.
In superconducting magnet excitation and demagnetization, room temperature current feed and 50K high-temperature superconductor electricity may make using above-mentioned apparatus
It is good to flow the connection of lead internal connection, and then reduces contact resistance, with the thermogenetic 50K thermic load of joule when reducing current-carrying,
It ensure that high-temperature superconductive lead wire upper end temperature is not higher than 77K always.It, will by tightening insulating nut after excitation
Room temperature current feed and 50K high-temperature superconductive lead wire internal connection disconnect, when can reduce superconducting magnet steady-state operation, room temperature
The conductive heat leakage of current feed 300K to 50K.The entire use process of above-mentioned apparatus does not consume liquid helium, does not need the low temperature of 4.2K
Environment, it is easy to operate, it is low in cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 be superconducting magnet room temperature current feed attachment device provided by a kind of specific embodiment of the present invention just
Face cross-sectional view；
Fig. 2 is the partial enlarged view of insulated electric conductor component and bellows component in Fig. 1；
Fig. 3 is the partial enlarged view of the fixed support component of epoxy in Fig. 1.
Appended drawing reference of the Fig. 1 into Fig. 3 is as follows:
1, insulated electric conductor；2, insulating nut；3, limited block；4, bellows component；5, vacuum pumping port；6, the fixed support of epoxy
Component；7, copper pedestal；8, flanged plate；61, stainless steel fixed block；62, pendant epoxies support rod；63, bottom epoxy support plate；41,
Bellows upper connector；42, connector under bellows；11, stainless steel annular element.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Core of the present invention is to provide a kind of superconducting magnet room temperature current feed attachment device.
Fig. 1-3 is please referred to, Fig. 1 is superconducting magnet room temperature current feed provided by a kind of specific embodiment of the present invention
The front section view of attachment device；Fig. 2 is the partial enlarged view of insulated electric conductor component and bellows component in Fig. 1；Fig. 3 is Fig. 1
The partial enlarged view of the fixed support component of middle epoxy.
In a kind of specific embodiment, superconducting magnet provided by the invention room temperature current feed attachment device, including it is true
Empty device, top are equipped with through-hole, are provided with insulated electric conductor component in through-hole.The vacuum plant can be combined by flanged plate 8 and
At, or other materials is made, and can be cylinder-shaped or cube, in addition on the lateral wall of the vacuum plant usually also
It is provided with vacuum pumping opening 5.
Above-mentioned attachment device further includes insulated electric conductor component and bellows component 4.Insulated electric conductor component is set to vacuum holding
In the top through-hole set, the insulated electric conductor 1 and insulating nut 2 of threaded engagement are specifically included；The generally vertical setting of insulated electric conductor 1 is passed through
It is through in through-hole, the radius of insulating nut 2 is greater than through-hole radius, is conveniently set to the outside of through-hole.Bellows component 4 it is upper
End is fixedly connected with vacuum plant, and lower end is fixedly connected with insulated electric conductor 1, that is to say, that insulated electric conductor 1 is located at vacuum plant
Interior part is predominantly located among bellows component 4, while the lower end of insulated electric conductor 1 is exposed to except bellows component 4.
Meanwhile the outer surface of bellows component 4, under vacuum state, inner surface is under atmospheric condition.To guarantee
Atmosphere inside bellows component 4 does not leak, and being fixedly connected between bellows component 4 and vacuum plant and insulated electric conductor 1 needs
To be tightly connected, welding usually can choose, by the upper connector 41 in the included outside at its upper end of bellows component 4,
Realize the welding of bellows component 4 and vacuum plant, structure is simple and leakproofness is guaranteed.It screws or unscrews in insulating nut 2
In the case where, bellows component 4 can drive insulated electric conductor 1 to move up and down by its internal and external pressure difference.Because bellows is tubulose, institute
With upper connector 41 for circular ring shape connector.
It is completely set up in vacuum plant in addition, above-mentioned attachment device further includes conductor assembly, and because vacuum holding
Other component will be also set, therefore conductor assembly includes conductor and dedicated conductive support, conductive support and vacuum in setting
Device is fixedly connected.The preferable metal of electric conductivity, such as copper or other metal or alloy may be selected in conductor herein, to keep away
Exempt from conductor to be subjected to displacement during the work time, the copper pedestal 7 with certain area can be set to, pass through bolt and conductor branch
Support member is fixed.
Wherein, epoxide resin material that is non-conductive and having certain support force can be used in conductive support.Conductive support can
Think the fixed support component 6 of epoxy comprising the two pendant epoxies support rods 62 and bottom epoxy support plate 63 being fixedly connected, three
Between can be to be bolted, conductor is set in bottom epoxy support plate 63, two pendant epoxies support rods 62 and vacuum plant
Inside upper surface is fixedly connected.It, can be stainless in its inside upper surface setting two if vacuum plant is that flanged plate 8 is composed
It is fixedly connected by steel fixed block 61 with bolt or screw with two pendant epoxies support rods 62, then passes through stainless steel fixed block 61
It is welded on the flanged plate 8 above vacuum plant.
The specific working principle is as follows for above-mentioned attachment device, and when insulating nut 2 unscrews, outside atmosphere passes through insulation
Gap between conductor 1 and insulating nut 2 enters in bellows component 4, because ripple tube outer surface is located under vacuum state, thus
The draught head of its surfaces externally and internally causes bellows component 4 to generate downward power, extends downward so that it generates elastic deformation, by
This drives insulated electric conductor 1 to move down until being in contact with the conductor of lower section, reaches connection status.It, will be exhausted when need to disconnect
Edge nut 2 screws, and drives insulated electric conductor 1 to move up and is detached from underlying conductor.The attachment device is simple to operate, Ji Nengbao
It demonstrate,proves room temperature current feed and the connection of 50K high-temperature superconductive lead wire internal connection is good；It again can tightening by insulating nut 2
The connection of the two is disconnected, thus when reducing superconducting magnet steady-state operation room temperature current feed conductive heat leakage.
As an improvement limited block 3 can be arranged in the upper outer of vacuum plant, it is used to prevent insulating nut 2 from existing
It is subjected to displacement in the course of work, is specifically as follows circular protrusion.
In a kind of specific embodiment, the lower end outside of insulated electric conductor 1 is provided with stainless steel annular element 11, by stainless
Steel annular element 11 realizes being fixedly connected for insulated electric conductor 1 and bellows component 4, can make the cross of bellows component 4 in this way
Diameter of section is significantly greater than the cross-sectional diameter of insulated electric conductor 1, that is, can avoid the too small generation friction in gap between the two, also favorably
It is increased in space in bellows, interior atmospheric pressure is sufficiently large in the state that insulating nut 2 unscrews.It specifically can be by bellows
Component 4 included lower connector 42 realizes the welding between stainless steel annular element 11 and glass stria tube.Connector 42 is descended herein
For circular ring shape connector.
Sealing is needed to connect between above-mentioned bellows component 4, stainless steel annular element 11 and insulated electric conductor 1, therefore stainless steel ring
It can be interference fit between shape part 11 and insulated electric conductor 1, naturally it is also possible to further add gasket therebetween.
In a kind of specific embodiment, the lower end of insulated electric conductor 1 and the contact surface of copper pedestal 7 are tapered surface, namely insulation
The lower end of conductor 1 is equipped with taper, and matching recessed portion is arranged in the top of copper pedestal 7, and the setting of the tapered surface can increase
The contact area of insulated electric conductor 1 and copper pedestal 7, so that the contact effect of the two is more preferable.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Superconducting magnet provided by the present invention is described in detail with room temperature current feed attachment device above.Herein
In apply that a specific example illustrates the principle and implementation of the invention, the explanation of above example is only intended to sides
Assistant solves method and its core concept of the invention.It should be pointed out that for those skilled in the art, not
, can be with several improvements and modifications are made to the present invention under the premise of being detached from the principle of the invention, these improvement and modification are also fallen into
In the protection scope of the claims in the present invention.
Claims (9)
1. a kind of superconducting magnet room temperature current feed attachment device characterized by comprising
Vacuum plant, the vacuum plant top are equipped with through-hole；
Insulated electric conductor component is set in the through-hole, including insulated electric conductor (1) and with the insulating nut (2) of its threaded engagement；
Bellows component (4), the upper end are fixedly connected with the vacuum plant, and lower end is fixedly connected with insulated electric conductor and can band
It is moved to move up and down；
Conductor assembly is set in the vacuum plant, including conductor and conductive support, when the insulated electric conductor moves down
It is in contact with the conductor.
2. superconducting magnet as described in claim 1 room temperature current feed attachment device, which is characterized in that the vacuum plant
Upper outer be provided with limited block (3), for preventing the insulating nut to be subjected to displacement during the work time.
3. superconducting magnet as claimed in claim 1 or 2 room temperature current feed attachment device, which is characterized in that
The conductive support is that epoxy is fixed support component (6), including two pendant epoxies support rods (62) being fixedly connected and bottom
Portion's epoxy support plate (63), the conductor are set on the bottom epoxy support plate (63), the two pendant epoxies support rods
(62) it is fixedly connected with the inside upper surface of vacuum plant.
4. superconducting magnet as claimed in claim 3 room temperature current feed attachment device, which is characterized in that the conductor is copper
Pedestal (7).
5. superconducting magnet as claimed in claim 4 room temperature current feed attachment device, which is characterized in that the bellows group
Part (4) upper end and the vacuum plant weld.
6. superconducting magnet as claimed in claim 5 room temperature current feed attachment device, which is characterized in that the insulated electric conductor
(1) lower end outside is provided with stainless steel annular element (11), under the stainless steel annular element (11) and the bellows component (4)
End welding.
7. superconducting magnet as claimed in claim 6 room temperature current feed attachment device, which is characterized in that the stainless steel ring
It is interference fit between shape part (11) and the insulated electric conductor (1).
8. superconducting magnet as claimed in claim 7 room temperature current feed attachment device, which is characterized in that the insulated electric conductor
(1) contact surface of lower end and the copper pedestal (7) is tapered surface.
9. superconducting magnet as claimed in claim 8 room temperature current feed attachment device, which is characterized in that the vacuum plant
It is composed of flanged plate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811419194.3A CN109215928B (en) | 2018-11-26 | 2018-11-26 | Normal temperature current lead connecting device for superconducting magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811419194.3A CN109215928B (en) | 2018-11-26 | 2018-11-26 | Normal temperature current lead connecting device for superconducting magnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109215928A true CN109215928A (en) | 2019-01-15 |
| CN109215928B CN109215928B (en) | 2024-05-24 |
Family
ID=64993829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811419194.3A Active CN109215928B (en) | 2018-11-26 | 2018-11-26 | Normal temperature current lead connecting device for superconducting magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109215928B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05114754A (en) * | 1991-10-23 | 1993-05-07 | Fuji Electric Co Ltd | Current lead insulating support structure of superconductive equipment |
| CN102735118A (en) * | 2012-06-29 | 2012-10-17 | 北京理工大学 | Electric pin pusher for fuse capable of pushing safety pin to move |
| JP2013222832A (en) * | 2012-04-17 | 2013-10-28 | Honda Motor Co Ltd | Magnetization device and magnetization method |
| CN103413645A (en) * | 2013-08-09 | 2013-11-27 | 中国科学院电工研究所 | Separated primary current lead device |
| US20140167757A1 (en) * | 2012-12-14 | 2014-06-19 | General Electric Company | Vacuum feed-through assembly |
| CN204142459U (en) * | 2014-10-30 | 2015-02-04 | 江苏省埃迪机电设备实业有限公司 | Wavy metal tube sensor |
| CN105863737A (en) * | 2016-04-27 | 2016-08-17 | 西安电子科技大学 | Permanent magnet linear power generation device driven by air pressure corrugated pipes |
| CN208834834U (en) * | 2018-11-26 | 2019-05-07 | 宁波健信核磁技术有限公司 | A kind of superconducting magnet room temperature current feed attachment device |
-
2018
- 2018-11-26 CN CN201811419194.3A patent/CN109215928B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05114754A (en) * | 1991-10-23 | 1993-05-07 | Fuji Electric Co Ltd | Current lead insulating support structure of superconductive equipment |
| JP2013222832A (en) * | 2012-04-17 | 2013-10-28 | Honda Motor Co Ltd | Magnetization device and magnetization method |
| CN102735118A (en) * | 2012-06-29 | 2012-10-17 | 北京理工大学 | Electric pin pusher for fuse capable of pushing safety pin to move |
| US20140167757A1 (en) * | 2012-12-14 | 2014-06-19 | General Electric Company | Vacuum feed-through assembly |
| CN103413645A (en) * | 2013-08-09 | 2013-11-27 | 中国科学院电工研究所 | Separated primary current lead device |
| CN204142459U (en) * | 2014-10-30 | 2015-02-04 | 江苏省埃迪机电设备实业有限公司 | Wavy metal tube sensor |
| CN105863737A (en) * | 2016-04-27 | 2016-08-17 | 西安电子科技大学 | Permanent magnet linear power generation device driven by air pressure corrugated pipes |
| CN208834834U (en) * | 2018-11-26 | 2019-05-07 | 宁波健信核磁技术有限公司 | A kind of superconducting magnet room temperature current feed attachment device |
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|---|---|
| CN109215928B (en) | 2024-05-24 |
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| CB03 | Change of inventor or designer information |
Inventor after: Yuan Jinhui Inventor after: Mo Yaomin Inventor after: Zheng Jie Inventor after: Yao Haifeng Inventor after: Xu Jianyi Inventor after: Liu Zhaoquan Inventor before: Yuan Jinhui Inventor before: Mo Yaomin Inventor before: Zheng Jie Inventor before: Yao Haifeng Inventor before: Xu Jianyi |
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Address after: 315300 No. 427, Gaoke Avenue, Cixi High-tech Industrial Development Zone, Ningbo City, Zhejiang Province Applicant after: Ningbo Jianxin Superconducting Technology Co.,Ltd. Address before: 315301 No.427, Gaoke Avenue, Cixi hi tech Industrial Development Zone, Ningbo City, Zhejiang Province Applicant before: NINGBO JANSEN NMR TECHNOLOGY Co.,Ltd. |
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